93-year-old Shalom Shtamberg celebrated his bar mitzvah 80 years late. When he was 13 he was imprisoned by the Nazis in the Warsaw Ghetto. After reading from the Torah in Haifa he danced with family and friends.
https://www.ynetnews.com/articles/0,7340,L-5010671,00.html
https://israelbetweenthelines.com/2017/09/07/a-93-year-old-bar-mitzvah-story/